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All results from a given calculation for C5H8 (1,3-Butadiene, 2-methyl-)

using model chemistry: HF/6-311G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at HF/6-311G*
 hartrees
Energy at 0K-193.993214
Energy at 298.15K-194.001202
Nuclear repulsion energy161.055978
The energy at 298.15K was derived from the energy at 0K and an integrated heat capacity that used the calculated vibrational frequencies.
Vibrational Frequencies calculated at HF/6-311G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A' 3388 3064 28.30      
2 A' 3377 3054 22.68      
3 A' 3321 3004 9.86      
4 A' 3305 2989 23.08      
5 A' 3299 2983 6.73      
6 A' 3264 2952 30.10      
7 A' 3183 2879 30.94      
8 A' 1870 1692 1.33      
9 A' 1807 1634 31.61      
10 A' 1637 1481 6.97      
11 A' 1591 1439 0.65      
12 A' 1562 1413 3.25      
13 A' 1541 1394 2.79      
14 A' 1439 1301 0.62      
15 A' 1436 1298 1.08      
16 A' 1184 1071 4.47      
17 A' 1099 994 0.12      
18 A' 1036 937 0.31      
19 A' 831 751 0.36      
20 A' 569 515 0.06      
21 A' 459 415 1.92      
22 A' 299 271 1.20      
23 A" 3231 2922 37.64      
24 A" 1618 1464 7.63      
25 A" 1171 1059 0.01      
26 A" 1131 1023 17.20      
27 A" 1054 953 57.90      
28 A" 1041 942 50.90      
29 A" 856 775 0.69      
30 A" 704 637 0.18      
31 A" 437 396 11.80      
32 A" 230 208 0.18      
33 A" 155 140 0.02      

Unscaled Zero Point Vibrational Energy (zpe) 26562.9 cm-1
Scaled (by 0.9044) Zero Point Vibrational Energy (zpe) 24023.5 cm-1
See section III.C.1 List or set vibrational scaling factors to change the scale factors used here.
See section III.C.2 Calculate a vibrational scaling factor for a given set of molecules to determine the least squares best scaling factor.
Rotational Constants (cm-1) from geometry optimized at HF/6-311G*
ABC
0.28623 0.14001 0.09567

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/6-311G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.592 1.714 0.000
C2 0.000 0.529 0.000
C3 -0.823 -0.697 0.000
C4 -0.371 -1.940 0.000
C5 1.501 0.392 0.000
H6 -1.664 1.810 0.000
H7 -0.030 2.631 0.000
H8 -1.889 -0.537 0.000
H9 0.678 -2.178 0.000
H10 -1.049 -2.774 0.000
H11 1.979 1.363 0.000
H12 1.843 -0.152 0.875
H13 1.843 -0.152 -0.875

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11 H12 H13
C11.32492.42233.66052.47621.07631.07572.59744.09444.51152.59573.19093.1909
C21.32491.47692.49651.50742.10042.10212.16882.79103.46592.14762.15112.1511
C32.42231.47691.32222.56662.64483.42141.07802.10842.08933.47792.85852.8585
C43.66052.49651.32222.99003.96674.58342.06721.07531.07534.05322.97702.9770
C52.47621.50742.56662.99003.46882.71263.51482.69904.06531.08221.08551.0855
H61.07632.10042.64483.96673.46881.82902.35744.62534.62553.67124.11354.1135
H71.07572.10213.42144.58342.71261.82903.67284.86125.50052.37613.46723.4672
H82.59742.16881.07802.06723.51482.35743.67283.04672.39024.30933.85263.8526
H94.09442.79102.10841.07532.69904.62534.86123.04671.82643.77272.49582.4958
H104.51153.46592.08931.07534.06534.62555.50052.39021.82645.12684.00064.0006
H112.59572.14763.47794.05321.08223.67122.37614.30933.77275.12681.75461.7546
H123.19092.15112.85852.97701.08554.11353.46723.85262.49584.00061.75461.7494
H133.19092.15112.85852.97701.08554.11353.46723.85262.49584.00061.75461.7494

picture of 1,3-Butadiene, 2-methyl- state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C3 119.571 C1 C2 C5 121.788
C2 C1 H6 121.683 C2 C1 H7 121.910
C2 C3 C4 126.138 C2 C3 H8 115.296
C2 C5 H11 111.000 C2 C5 H12 111.076
C2 C5 H13 111.076 C3 C2 C5 118.641
C3 C4 H9 122.824 C3 C4 H10 120.912
C4 C3 H8 118.566 H6 C1 H7 116.407
H9 C4 H10 116.265 H11 C5 H12 108.081
H11 C5 H13 108.081 H12 C5 H13 107.376
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.470 -0.619   -0.718
2 C 0.082 0.285   0.435
3 C -0.236 -0.121   -0.265
4 C -0.451 -0.405   -0.410
5 C -0.694 -0.140   -0.450
6 H 0.219 0.202   0.229
7 H 0.219 0.214   0.249
8 H 0.209 0.118   0.178
9 H 0.225 0.180   0.187
10 H 0.226 0.158   0.184
11 H 0.222 0.047   0.122
12 H 0.225 0.040   0.130
13 H 0.225 0.040   0.130


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.211 -0.034 0.000 0.214
CHELPG        
AIM        
ESP 0.232 -0.063 0.000 0.240


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -29.723 0.009 0.000
y 0.009 -30.056 0.000
z 0.000 0.000 -35.759
Traceless
 xyz
x 3.185 0.009 0.000
y 0.009 2.684 0.000
z 0.000 0.000 -5.869
Polar
3z2-r2-11.739
x2-y20.334
xy0.009
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.734 -1.350 0.000
y -1.350 12.673 0.000
z 0.000 0.000 4.514


<r2> (average value of r2) Å2
<r2> 131.099
(<r2>)1/2 11.450